The Shop > Tools
X3 Milling machine Motor Overheating and tripping house RCD
Bluechip:
It should motor slowly on 12v battery, may have to give it a bit of help to start it.
If it runs but often stops in the same place(s) you have a dead winding(s). Motor shot!
Does it smell hot shellaccy ?? Unmistakable stink!
What does the commutator look like? Should be an even polished brown colour.
Gaps between commutator segments? No blast marks on edges of copper bars.
Dave
lordedmond:
John there was not any suppression caps in my X3 motor when it released its magic smoke
Stuart
raynerd:
Commutator looks black with carbon powder.
no smell
Lots of black between commutator bars, blown that out.
Not done the light bulb test - not 100% confident in what to do :zap:
I'll give it a clean out and run it off the machine see if it goes again now!!
John Rudd:
--- Quote from: raynerd on December 02, 2015, 03:26:39 PM ---
Not done the light bulb test - not 100% confident in what to do :zap:
--- End quote ---
Chris,
Take a mains bulb holder with its wiring, connect the two wires in place of the motor, the lamp should be out at zero speed, and brighter as you advance the speed pot without tripping any fuse/rcd/mcb....
If I remember correctly, the controller used on the X3 is similar to that of the mini lathe/mill fitted with the American KB board....in as much as they use scr's not mosfets..so some resilience/consolation there
My offer stands to test for you...
raynerd:
[ Invalid YouTube link ]
Ok John, I'll go and do the test now. I took the video before reading your post.
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